1 88 BIOPLASM AND PROTOPLASM. 



seemed to me desirable to introduce the more simple term 

 living matter, or bioplasm, to denote the growing, active, 

 moving substance which is peculiar to everything living, and 

 which is alone concerned in the multiplication, growth, and 

 formation of all tissues and organisms, and to restrict the 

 term to living matter only. 



It is, however, to be remarked, that since 1860, when I 

 directed attention to the confusion at that time existing 

 with regard to the several parts and offices of the " cell," 

 and showed that every living organism and " cell " con- 

 sisted of matter in two distinct states, the word protoplasm 

 has by some writers been made to stand for living matter 

 or bioplasm only. It is, I think possible, that after some 

 years have passed, protoplasm may be restricted to living 

 matter only. The term will then become synonymous with 

 bioplasm or living matter, in which case the latter words may 

 be given up. 



Living matter or bioplasm, formed matter, and pabulum, 

 are the only terms required in describing the development, 

 formation, and growth of any tissue, the production of 

 secretions, and other phenomena peculiar to living things. 

 I have ventured to suggest the use of these terms, because 

 they have the advantage of being very simple. They can 

 be accurately denned and distinguished from other words. 

 They are short, expressive, and can be remembered without 

 difficulty, and it will, I think, be admitted that there is an 

 absence of that mysteriousness which hangs about so many 

 of our scientific words in ordinary use, and greatly adds to 

 the difficulties of the student when learning science. 



Non-living Particles of Matter contrasted with Living 

 Particles. In order that the reader may understand what is 



